Zobrazeno 1 - 10
of 2 314
pro vyhledávání: '"Anderson, Richard P."'
Autor:
Evans, Nancy Remage, Kervella, Pierre, Kuraszkiewicz, Joanna, Günther, H. Moritz, Anderson, Richard I., Proffitt, Charles, Gallenne, Alexandre, Mérand, Antoine, Trahin, Boris, Viviani, Giordano, Shetye, Shreeya
Cepheid masses continue to be important tests of evolutionary tracks for intermediate mass stars as well as important predictors of their future fate. For systems where the secondary is a B star, {\it Hubble Space Telescope} ultraviolet spectra have
Externí odkaz:
http://arxiv.org/abs/2410.01934
Classical Cepheid variable stars provide a unique probe to binary evolution in intermediate-mass stars over the course of several tens to hundreds of Myr. We studied the binary and multiple properties of Cepheids, assuming that all mid-B stars form i
Externí odkaz:
http://arxiv.org/abs/2409.07530
Autor:
Riess, Adam G., Scolnic, Dan, Anand, Gagandeep S., Breuval, Louise, Casertano, Stefano, Macri, Lucas M., Li, Siyang, Yuan, Wenlong, Huang, Caroline D., Jha, Saurabh, Murakami, Yukei S., Beaton, Rachael, Brout, Dillon, Wu, Tianrui, Addison, Graeme E., Bennett, Charles, Anderson, Richard I., Filippenko, Alexei V., Carr, Anthony
JWST provides new opportunities to cross-check the HST Cepheid/SNeIa distance ladder, which yields the most precise local measure of H0. We analyze early JWST subsamples (~1/4 of the HST sample) from the SH0ES and CCHP groups, calibrated by a single
Externí odkaz:
http://arxiv.org/abs/2408.11770
We homogeneously measured the elliptical shapes of 163 globular clusters (GCs) using the on-sky distribution of their cluster members and the third data release of the ESA mission Gaia (DR3). The astrometry enables the differentiation of stars within
Externí odkaz:
http://arxiv.org/abs/2408.00605
Autor:
Li, Siyang, Anand, Gagandeep S., Riess, Adam G., Casertano, Stefano, Yuan, Wenlong, Breuval, Louise, Macri, Lucas M., Scolnic, Daniel, Beaton, Rachael, Anderson, Richard I.
The Hubble Tension, a >5 sigma discrepancy between direct and indirect measurements of the Hubble constant (H0), has persisted for a decade and motivated intense scrutiny of the paths used to infer H0. Comparing independently-derived distances for a
Externí odkaz:
http://arxiv.org/abs/2408.00065
Autor:
Evans, Nancy Remage, Schaefer, Gail, Gallenne, Alexandre, Torres, Guillermo, Horch, Elliot P., Anderson, Richard I, Monnier, John, Roettenbacher, Rachael M., Baron, Fabien, Anugu, Narsireddy, Davidson, Jr., James W., Kervella, Pierre, Bras, Garance, Proffitt, Charles, Mérand, Antoine, Karovska, Margarita, Jones, Jeremy, Lanthermann, Cyprien, Kraus, Stefan, Codron, Isabelle, Bond, Howard E., Viviani, Giordano
The 30 year orbit of the Cepheid Polaris has been followed with observations by the CHARA Array (Center for High Angular Resolution Astronomy) from 2016 through 2021. An additional measurement has been made with speckle interferometry at the Apache P
Externí odkaz:
http://arxiv.org/abs/2407.09641
We investigate the absolute calibration of the Tip of the Red Giant Branch (TRGB) in the Small Magellanic Cloud (SMC) using small amplitude red giant stars (SARGs) classified by the Optical Gravitational Lensing Experiment (OGLE). We show that all st
Externí odkaz:
http://arxiv.org/abs/2406.19375
Autor:
Evans, Nancy Remage, Gallenne, Alexandre, Kervella, Pierre, Mérand, Antoine, Monnier, John, Anderson, Richard I, Günther, H. Moritz, Proffitt, Charles, Winston, Elaine M., Pietrzynski, Grzegorz, Gieren, Wolfgang, Kuraszkiewicz, Joanna, Anugu, Narsireddy, Roettenbacher, Rachael M., Lanthermann, Cyprien, Gutierrez, Mayra, Schaefer, Gail, Setterholm, Benjamin R., Ibrahim, Noura, Kraus, Stefan
The Cepheid AW Per is a component in a multiple system with a long period orbit. The radial velocities of Griffin (2016) cover the 38 year orbit well. An extensive program of interferometry with the CHARA array is reported here, from which the long p
Externí odkaz:
http://arxiv.org/abs/2406.17881
Autor:
Shetye, Shreeya S., Viviani, Giordano, Anderson, Richard I., Mowlavi, Nami, Eyer, Laurent, Evans, Nancy R., Szabados, Laszlo
Classical Cepheids provide valuable insights into the evolution of stellar multiplicity among intermediate-mass stars. Here, we present a systematic investigation of single-lined spectroscopic binaries (SB1) based on high-precision velocities measure
Externí odkaz:
http://arxiv.org/abs/2405.19840
Autor:
Bacon, Roland, Maineiri, Vincenzo, Randich, Sofia, Cimatti, Andrea, Kneib, Jean-Paul, Brinchmann, Jarle, Ellis, Richard, Tolstoi, Eline, Smiljanic, Rodolfo, Hill, Vanessa, Anderson, Richard, Saez, Paula Sanchez, Opitom, Cyrielle, Bryson, Ian, Dierickx, Philippe, Garilli, Bianca, Gonzalez, Oscar, de Jong, Roelof, Lee, David, Mieske, Steffen, Otarola, Angel, Schipani, Pietro, Travouillon, Tony, Vernet, Joel, Bryant, Julia, Casali, Marc, Colless, Matthew, Couch, Warrick, Driver, Simon, Fontana, Adriano, Lehnert, Matthew, Magrini, Laura, Montet, Ben, Pasquini, Luca, Roth, Martin, Sanchez-Janssen, Ruben, Steinmetz, Matthias, Tresse, Laurence, Yeche, Christophe, Ziegler, Bodo
In this paper, we describe the wide-field spectroscopic survey telescope (WST) project. WST is a 12-metre wide-field spectroscopic survey telescope with simultaneous operation of a large field-of-view (3 sq. degree), high-multiplex (20,000) multi-obj
Externí odkaz:
http://arxiv.org/abs/2405.12518